Building my 1st SFF - Money is an issue :)

Hi all,

I have a budget of around 500-600 quid...and I am planning to build a SFF system.

I am looking at either the sn41g2 or the sn45g

One of the things I will be using it for is video editing. Nothing major, but it is one of the main uses. Games of course, not too concerned about super high end play, but I am looking at something that will run Doom 3 respectably.